UHLER ON INSECTS. 457 



New Jersey. In the mouutain-gulches, at the higher levels which admit 

 the development of the willow, I found it in less numbers, of smaller 

 size, and with less prominent thoracic horns. As in Marj^land, I took, 

 from a single clump of willow-bushes, a series of forms ranging from 

 the extreme, with short, blunt, thoracic angles, and flUed-out or convex 

 disk, to that with long recurved angles and concave disk. In Denver 

 City, it was also found abundantly upon many kinds of weeds growing 

 on the depressed spots near water, as well as upon the willows ; and it 

 was only a little less common near Caiion City, where the soil is very 

 diifereut from that near Denver. In Clear Creek Canon, it was not rare. 



Enchenopa Amyot et Serv. 

 U. curvata. 



Memibrads curvata Fab., Syst. Rliyng., 13, No. 34. 

 Alemhracis laiipea Say, Loug's Expedition, ii, 302, No. 5. 

 Enchenopa antonina Walker, Brit. Mus. Homopt., ii, 488, No. 32. 

 Enchenopa venosa Walk., E. densa Walk., E. frigida Walk., E. himactdata Walk., 

 ib., ii, pp. 48S-491. 



Not uncommon in many parts of Colorado on the plains and foot-hills. 

 I met with it in Denver, near Golden, near Colorado Springs, on small 

 plants in low grounds, and also in the valley of the Arkansas near 

 Canon City in August. Dr. Packard obtained a specimen in the vicinity 

 of Boulder on June 29. 



PUBLILIA Stal. 

 P. modesta. 



Puhlilia modesia Uhler, in Bull. U. S. Geol. Surv., ii, 78, No. 2. 



Not abundant in any of the localities visited by me. I detected a few 

 specimens in Clear Creek Caiion, August 6; at Colorado Springs and 

 Manitou, August 17, and west of Denver, August 18; also at Pueblo, 

 August 10. 



Cyrtosia Fitch. 

 C, fenestrafa. 



Cyrtosia fenestrata Fitch, Fourth Ann. Report, 49, No. 2. 



A few specimens occurred to me while beating small oak-trees at Man- 

 itou, August 10. 



Family CERCOPID^. 



Aphrophora Germ. 

 A. quadrangularis. 



Cercopis quadravgtdaris Say, Journ. Acad. Pbila., iv, 335. 



One specimen from the vicinity of Caiion City, and a few others from 

 the region of irrigation west of Denver, August 6 to 17. Probably the 

 scarcity of this insect may have been occasioned by the lateness of the 

 season during which I was in the field. It is usually common in the 

 places to which it attaches itself in its onward distribution. 



